Digestate-derived carbonized char and activated carbon: Application perspective

Wang, Wei; Chang, Jo‐Shu; Lee, Duu-Jong

doi:10.1016/j.biortech.2023.129135

Cited by 12 publications

(2 citation statements)

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“…9,10 Char could be used for soil amendment and the preparation of a carbon-based catalyst and as adsorbent or electrode material for energy storage. 11,12 Bio-oil is seen as a potential feedstock for the production of biofuel. 13,14 Gases from pyrolysis could be combusted for providing heat required for pyrolysis.…”

Section: Introductionmentioning

confidence: 99%

“…Pig manure, in fact, is a carbonaceous resource, containing chemical energy that could be further exploited via a thermochemical route, like pyrolysis. , Pyrolysis is a process for converting carbonaceous materials, like pig manure, into char, bio-oil, and combustible gases. , Char could be used for soil amendment and the preparation of a carbon-based catalyst and as adsorbent or electrode material for energy storage. , Bio-oil is seen as a potential feedstock for the production of biofuel. , Gases from pyrolysis could be combusted for providing heat required for pyrolysis. , As a waste in livestock production, pig manure production is relatively stable and has no seasonal fluctuations . If fully utilized, it can not only reduce environmental pollution but also generate an added value. , …”

Section: Introductionmentioning

confidence: 99%

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Involvement of Acid-Leachable Inorganics in Pyrolysis of Pig Manure

Chen,

Li,

Zhang

et al. 2024

Energy Fuels

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Pig manure is a typical solid waste, which features a high content of inorganics. These inorganics might be involved in thermochemical conversion of pig manure, and this was investigated herein by pyrolysis of pig manure leached with varied concentrations of H 2 SO 4 (0.5−6 mol L −1 ) at 600 °C. The removal of acid-leachable inorganics [CaCO 3 , Ca 3 (PO 4 ) 2 , alkaline oxides, etc.] exposed more acidic sites derived from the oxides, like SiO 2 . This enhanced production of the gases at the expense of bio-oil. Furthermore, aromatization and secondary condensation reactions were also promoted, increasing not only the yield of char (from 29.6 to 39.7%, on an organic basis) but also the carbon content in char from 16.1% (blank sample) to 26.2% (leached with 6 mol L −1 H 2 SO 4 ). Leaching partial inorganics rendered more sufficient contact and interaction between the organics, facilitating charring of organic matter. This further retained more carbon skeleton for generation of more micropores, which further enhanced the capability of the resulting char for adsorption of phenol. In situ infrared analysis indicated the presence of more abundant oxygen-containing functionalities and carbonaceous species after the leaching treatment, favoring the occurrence of aromatization reactions.

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